Child&#39;s booster car seat



FIG. 1 is a left side view of the child's booster car seat showing the design of our invention;

FIG. 2 is a right side view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is bottom view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a child's booster car seat, as shown and described. 